Select your cookie preferences

We use essential cookies and similar tools that are necessary to provide our site and services. We use performance cookies to collect anonymous statistics, so we can understand how customers use our site and make improvements. Essential cookies cannot be deactivated, but you can choose “Customize” or “Decline” to decline performance cookies.

If you agree, AWS and approved third parties will also use cookies to provide useful site features, remember your preferences, and display relevant content, including relevant advertising. To accept or decline all non-essential cookies, choose “Accept” or “Decline.” To make more detailed choices, choose “Customize.”

ST_AsHexEWKB - Amazon Redshift

ST_AsHexEWKB

ST_AsHexEWKB returns the extended well-known binary (EWKB) representation of an input geometry or geography using ASCII hexadecimal characters (0–9, A–F). For 3DZ, 3DM, and 4D geometries or geographies, ST_AsHexEWKB uses the PostGIS extended WKB value for the geometry or geography type.

Syntax

ST_AsHexEWKB(geo)

Arguments

geo

A value of data type GEOMETRY or GEOGRAPHY, or an expression that evaluates to a GEOMETRY or GEOGRAPHY type.

Return type

VARCHAR

If geo is null, then null is returned.

If the result is larger than a 64-KB VARCHAR, then an error is returned.

Examples

The following SQL returns the hexadecimal EWKB representation of a polygon in a geometry.

SELECT ST_AsHexEWKB(ST_GeomFromText('POLYGON((0 0,0 1,1 1,1 0,0 0))',4326));
st_ashexewkb -------------------------------- 0103000020E61000000100000005000000000000000000000000000000000000000000000000000000000000000000F03F000000000000F03F000000000000F03F000000000000F03F000000000000000000000000000000000000000000000000

The following SQL returns the hexadecimal EWKB representation of a polygon in a geography.

SELECT ST_AsHexEWKB(ST_GeogFromText('POLYGON((0 0,0 1,1 1,1 0,0 0))'));
st_ashexewkb -------------------------------- 0103000020E61000000100000005000000000000000000000000000000000000000000000000000000000000000000F03F000000000000F03F000000000000F03F000000000000F03F000000000000000000000000000000000000000000000000
PrivacySite termsCookie preferences
© 2025, Amazon Web Services, Inc. or its affiliates. All rights reserved.